Hi guys,
Got my head back from the workshop I need som info that could speed up the rebuild process.
My SPECS :
HEAD and BLOCK refursbished.
Cometic 1,3mm headgasket.
Carillo Pistons 9.0.1 Compression
Pauter Rods 19mm
Tomei Procams IN/EX 270 12,50 mm lift. (With TOMEi adjustable gears).
Valvetrain all components / Supertech valves : IN/EX valve +0.1mm oversize.
Part Number: SPR-H1005D/GTIR
Type: Dual Spring
Press.Seat: 75 @ 38.5
Press.Open: 190 @ 10
Max Lift: 17mm
Coil Bind: 21.50mm
Rate: 11.50mm
Retainer: RET-NSR20/T1 + OE seat
OutSpr.OD: 29.65mm
OutSpr.ID: 21.85mm
InnSpr.OD: 20.50mm
InnSpr.ID: 15.50mm
It seems like with the default timing the IN/valve is open 4mm on cylinder 1 according to my contact u fixed the head, I need to know whether I can use the default timing or not. I have been busy as hell at work so I had zero time for the GTiR, I contacted TOMEi and they told me this :
Although we do not have CAM SPEC CARDS available for SR20 camshafts, if you are concerned with the piston top hitting/making contact with the valves, this isn't an issue with the default valve timing (INT: Lobe Center 110 degs / EXH: Lobe Center 115 degs).
With this setup, you can also adjust the valve timing on the INTAKE side by up to +/- 3 measurements using TOMEI Adjustable Cam Gear(s).
I hope this helps.
Best Regards,
*****************************************************
Jun Hamamura
TOMEI POWERED USA INC.